| LOR |
lock order reversal:
1st 0xc0caefa0 syscons video lock (syscons video lock) @ sys/dev/syscons/syscons.c:2534
2nd 0xc0c3f200 sched lock 2 (sched lock) @ sys/kern/kern_clock.c:286
KDB: stack backtrace:
db_trace_self_wrapper(c0b09c00,e6a7b8c8,c07bb6b5,c0b0afce,c0c3f200,...) at db_trace_self_wrapper+0x26
kdb_backtrace(c0b0afce,c0c3f200,c0c3f234,c0b08cf1,c0b04244,...) at kdb_backtrace+0x29
witness_checkorder(c0c3f200,9,c0b0423b,11e,9,...) at witness_checkorder+0x5e5
_thread_lock_flags(c63eeaf0,0,c0b0423b,11e,e6a7b928,...) at _thread_lock_flags+0x50
hardclock_cpu(0,c0aefb8f,2,c00b8000,c6230728,...) at hardclock_cpu+0x129
lapic_handle_timer(e6a7b948) at lapic_handle_timer+0xc3
Xtimerint() at Xtimerint+0x1f
--- interrupt, eip = 0xc0a643ae, esp = 0xe6a7b988, ebp = 0xe6a7b9a8 ---
generic_bcopy(c0c32588,0,c0c3256c,0,7d0,c0aefb86,703,c63eeaf0) at generic_bcopy+0x1a
vga_txtdraw(c0c32560,0,7d0,0,1,...) at vga_txtdraw+0xe4
scrn_update(c0c32560,e6a7ba38,c06a4e3d,c0c32560,e6a7ba2f,...) at scrn_update+0x295
sccnupdate(c0c32560,e6a7ba2f,1,ac8898c) at sccnupdate+0xa6
sc_cnputc(c0b8ae40,a,e6a7bbc4,5,a,...) at sc_cnputc+0xcd
cnputc(a,e6a7bbc4,e6a7ba84,c07b1741,c63eeaf0,...) at cnputc+0x5f
putcons(c63eeaf0,e6a7ba7c,1000246,c6872a50,c74ff39a,...) at putcons+0x17
putchar(a,e6a7bbc4,c07baeeb,0,c0b02c49,...) at putchar+0x61
kvprintf(c74ff37f,c07b16e0,e6a7bbc4,a,e6a7bbf0,...) at kvprintf+0x75
printf(c74ff37f,0,c74ff02b,1e1,c74ff02b,...) at printf+0x4e
do_detach(c0c36750,0,c74ff02b,2b7,c6ca7b80,...) at do_detach+0x4e8
scmicro_detach(c6ca7b80,c6667858,c0bca700,0,0,...) at scmicro_detach+0x48
device_detach(c6ca7b80,3,c63d69e0,c0706048,c63d69e0,...) at device_detach+0x68
usb_disconnect_port(c63e82c4,c63e8300,10,c0afa3b1,27f,...) at usb_disconnect_port+0x107
uhub_explore(c63e8500,c63eb100,e6a7bcf8,c0700387,c63f3210,...) at uhub_explore+0x2a1
usb_discover(c63f3210,0,5c,c0afc9ad,ea60,...) at usb_discover+0x55
usb_event_thread(c63eb100,e6a7bd38,c0b050d7,31c,c63fc828,...) at usb_event_thread+0xa7
fork_exit(c07002e0,c63eb100,e6a7bd38) at fork_exit+0x94
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xe6a7bd70, ebp = 0 ---
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